He Lian-Sheng, Meng Fan-Li, Diao Xiao-Jun, Li Yi-Wei, Meng Rui, Xi Bei-Dou, Shu Jian-Min
Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Huan Jing Ke Xue. 2013 Jul;34(7):2637-41.
Effects of Nelumbo nucifera stem and leaf tissue extract on the growth of Microcystis aeruginosa and Scenedesmus quadricanda were studied to verify its potential in entriphication control. Five concentrations of Nelumbo nucifera stem and leaf tissue extract were chosen to compare their inhibitory effects on the growth of Microcystis aeruginosa and Scenedesmus quadricanda. The result showed that the leaf extract inhibited the algae bloom more effectively than the stem extract on the whole. When the leaf extract normality was 25 g x L(-1), the highest inhibition rate of Microcystis aeruginosa and Scenedesmus quadricanda was 71.33% and 78.14%, respectively, while for the stem extract, the values were 49.78% and 52.14%. Propanamide was found in both the stem and leaf tissue extracts of Nelumbo nucifera by GC-MS analysis, with concentrations of 1.1 mg x L(-1) and 0.2 mg x L(-1), respectively. The EC50 values of the two kinds of algae were calculated by the probability method.
研究了莲茎叶组织提取物对铜绿微囊藻和四角栅藻生长的影响，以验证其在富营养化控制中的潜力。选择了五种浓度的莲茎叶组织提取物，比较它们对铜绿微囊藻和四角栅藻生长的抑制作用。结果表明，总体上叶提取物比茎提取物更有效地抑制藻类繁殖。当叶提取物浓度为25 g·L⁻¹时，对铜绿微囊藻和四角栅藻的最高抑制率分别为71.33%和78.14%，而茎提取物的相应值分别为49.78%和52.14%。通过气相色谱-质谱联用（GC-MS）分析在莲的茎叶组织提取物中均发现了丙酰胺，其浓度分别为1.1 mg·L⁻¹和0.2 mg·L⁻¹。采用概率法计算了两种藻类的半数有效浓度（EC50）值。
